Journal
CLINICAL AND APPLIED THROMBOSIS-HEMOSTASIS
Volume 16, Issue 5, Pages 515-521Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/1076029610369798
Keywords
homocysteine; thiolactonase; oxidized LDL; coronary artery disease; methylenetetrahydrofolate reductase
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Funding
- The Ministere de l'Enseignement Superieur de la Recherche Scientifique [UR03/ES08]
- Direction Generale de la Recherche Scientifique et technologique DGRST-USCR-Spectrometrie de masse
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Coronary artery diseases (CAD) are influenced by multiple genes of modest effect as the methylenetetrahydrofolate reductase (MTHFR) C677T gene polymorphism, related to MTHFR activity and total plasma homocysteine (tHcy) concentration. This study was designed to evaluate tHcy, oxidized low-density lipoprotein (LDL) (ox-LDL), high-sensibility C-reactive protein (Hs CRP) levels, and homocysteine thiolactonase (HTase) activities as new risk factors for CAD and to investigate an association between MTHFR polymorphism tHcy concentrations and coronary syndrome severity. Our results showed significantly higher levels of tHcy and ox-LDL in patients associated with lower HTase activities. These levels increased proportionally to disease severity. Total plasma Hcy levels were negatively correlated to HTase activities in patients where the TT genotype was significantly more frequent. In a multivariate analysis, tHcy level was the only independent factor affecting the coronary syndrome severity. High tHcy levels are associated with coronary syndrome severity and may be explained either by the elevated prevalence of TT genotype or by the diminished HTase activities.
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